The 52WK range for Nintendo's stock (trading on the Tokyo Stock Exchange) is: 15,790 - 29,300 (in yens, of course). Current price of the stock is 16,390. So, in roughly a little over twelve months the stock has dropped by half.
http://www.google.com/finance?q=TYO:7974
Hard to say if that drop is directly or indirectly attributable to much of anything, but it is quite a drop.